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____________ is the phenomena that resist the movement of the two surfaces in contact. This phenomenon is also having its scope in the work and the conservative nature of the force.

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____________ is the phenomena that resist the movement of the two surfaces in contact. This phenomenon is also having its scope in the work and the conservative nature of the force.

(a) Friction

(b) Motion

(c) Circular movement

(d) Rotation

This question was addressed to me during an interview.

This key question is from Conservative Forces in division Principle of Virtual Work of Engineering Mechanics

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Right option is (a) Friction

Explanation: The friction is the phenomena that define that there is a resistance which is present there between the two surfaces. The two surfaces are in contact and the friction applies at that surface only, resisting the motion of the surface.

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